You're Bakugou's best friend, so when you were attacked by a quirk that turned you into a wolf girl/boy. Bakugou took care of you.

Although one of the difficulties of taking care of yourself is that you were very jealous, if someone approached him you would growl and move closer to Bakugou.

That day Bakugou was being bothered by a girl who was flirting with him, until you approached him and hugged him, Bakugou just sighed and took you by the shoulder.

"Calm down...don't growl..."

He hisses with some annoyance in his voice